Star Wars Episode IV: A New Hope
There are computer-generated rocks in front of R2-D2 while he’s hiding in the canyon; however, they’re “magically not there” after he comes out of hiding
Obi-Wan’s fake “Krayt Dragon” roar is once again altered and it sounds “hideous”; keep the mute button at the ready
Greedo shoots first – again – but this time with slightly fewer frames than the previous release
Luke’s lightsaber while training on the Millennium Falcon is back to being “white” and “blue” as it was originally – it is no longer pale green, per the 2004 DVD release
Star Wars Episode V: The Empire Strikes Back
Flames have been added to the probe droid crater
Most of the blue tint on Hoth is gone
The Wampa arm is “fixed” — whatever that means — but it’s still imperfect
R2-D2’s once black panels are now blue in space
A la the DVD release, Emperor Palpatine – via hologram – is still played by Ian McDiarmid in his Revenge of the Sith makeup
Star Wars Episode VI: Return of the Jedi
The static shot of C3PO and R2-D2 approaching Jabba’s palace has been replaced by a “wide pan with a huge door”; the door is now peppered with laser blast impacts
Han Solo’s “carbonite thaw” is now CGI
A computer-generated “Dug” from the prequels (Sebulba, the evil racer who podraced Anakin in The Phantom Menace, was a dug) is seen walking across the screen after Luke infiltrates Jabba’s palace; the dug looks “really fake, like it was [added at the] last minute”
Wicket the Ewok now has computer-generated, blinking eyes
Darth Vadar says “No” several times as he picks up Emperor Palpatine and tosses him into the Death Star reactor core; the “Nos” seem to be sampled from The Empire Strikes Back and Revenge of the Sith, respectively.
http://screenrant.com/star-wars-bluray-changes-benm-131712/